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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-02-04 10:21:25 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-02-04 10:21:25 +0000 |
| commit | 3950ddaed21130c7fbf5e82d314a92b0d58ec4aa (patch) | |
| tree | 72bcab35b6edc367f1b04ac18dd3b72d70cd6619 /os/ports/GCC/PPC/SPC56ELxx/bam.s | |
| parent | 2290c04561a10aed621a449ebe1bc52ebc140d23 (diff) | |
| download | ChibiOS-3950ddaed21130c7fbf5e82d314a92b0d58ec4aa.tar.gz ChibiOS-3950ddaed21130c7fbf5e82d314a92b0d58ec4aa.tar.bz2 ChibiOS-3950ddaed21130c7fbf5e82d314a92b0d58ec4aa.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5108 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/ports/GCC/PPC/SPC56ELxx/bam.s')
| -rw-r--r-- | os/ports/GCC/PPC/SPC56ELxx/bam.s | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/os/ports/GCC/PPC/SPC56ELxx/bam.s b/os/ports/GCC/PPC/SPC56ELxx/bam.s new file mode 100644 index 000000000..be7e83cd9 --- /dev/null +++ b/os/ports/GCC/PPC/SPC56ELxx/bam.s @@ -0,0 +1,71 @@ +/*
+ ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
+ 2011,2012,2013 Giovanni Di Sirio.
+
+ This file is part of ChibiOS/RT.
+
+ ChibiOS/RT is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS/RT is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file SPC56ELxx/bam.s
+ * @brief SPC56ELxx boot assistant record.
+ *
+ * @addtogroup PPC_CORE
+ * @{
+ */
+
+#if !defined(__DOXYGEN__)
+
+ /* BAM info, SWT off, WTE off, VLE from settings.*/
+ .section .bam, "ax"
+ .long 0x015A0000
+ .long .clear_ecc
+
+ /* RAM clearing, this device requires a write to all RAM location in
+ order to initialize the ECC detection hardware, this is going to
+ slow down the startup but there is no way around.*/
+.clear_ecc:
+ xor %r16, %r16, %r16
+ xor %r17, %r17, %r17
+ xor %r18, %r18, %r18
+ xor %r19, %r19, %r19
+ xor %r20, %r20, %r20
+ xor %r21, %r21, %r21
+ xor %r22, %r22, %r22
+ xor %r23, %r23, %r23
+ xor %r24, %r24, %r24
+ xor %r25, %r25, %r25
+ xor %r26, %r26, %r26
+ xor %r27, %r27, %r27
+ xor %r28, %r28, %r28
+ xor %r29, %r29, %r29
+ xor %r30, %r30, %r30
+ xor %r31, %r31, %r31
+ lis %r4, __ram_start__@h
+ ori %r4, %r4, __ram_start__@l
+ lis %r5, __ram_end__@h
+ ori %r5, %r5, __ram_end__@l
+.cleareccloop:
+ cmpl cr0, %r4, %r5
+ bge cr0, .cleareccend
+ stmw %r16, 0(%r4)
+ addi %r4, %r4, 64
+ b .cleareccloop
+.cleareccend:
+ b _boot_address
+
+#endif /* !defined(__DOXYGEN__) */
+
+/** @} */
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